QZSS对GPS区域性能增强分析  

Analysis on QZSS Augmentation on Area Performance of GPS

作　　者：李作虎[1] 郝金明[1] 李建文[1,2] 张成军[1] 

机构地区：[1]信息工程大学测绘学院,郑州市陇海中路66号450052 [2]武汉大学卫星导航定位技术研究中心,武汉市珞喻路129号430079

出　　处：《武汉大学学报（信息科学版）》2010年第1期17-20,共4页Geomatics and Information Science of Wuhan University

基　　金：卫星导航与定位教育部重点实验室(B类)开放研究基金资助项目

摘　　要：在日本和中国中东部地区,就日本准天顶卫星系统(QZSS)对GPS导航精度增强、完好性增强以及可用性增强进行了仿真计算比较。结果表明,只有3颗卫星组成的QZSS在这些区域内对GPS提供了有效的性能增强,而且随着卫星截止角的增加,这种性能增强显得更为明显;QZSS在战时可有效降低由于部分GPS卫星失效而导致的性能恶化程度。分析结果对于我国在中部地区和东部热点地区有效利用GNSS导航资源具有指导作用。In the areas such as Japan and eastern and middle part of China, the performance augmentations of QZSS to GPS on navigation precision, availability and integrity are simulated and compared. The results show that QZSS consist of only three satellites can provide effective augmentation to GPS in above fields. With the mask angle increasing, the performance improvements will become more obvious. The results also show that QZSS can effectively reduce the performance deterioration of GPS in the wartime, because of results from tive application of GNSS resources in Chinese middle part and eastern key area.

关 键 词：QZSS GPS PDOP 可用性 完好性 

分 类 号：P228.41[天文地球—大地测量学与测量工程]